syzkaller login: [ 30.573048] BUG: Bad rss-counter state mm:00000000f9df30e5 type:MM_FILEPAGES val:33 [ 30.574211] BUG: Bad rss-counter state mm:00000000f9df30e5 type:MM_ANONPAGES val:22 [ 30.609895] ================================================================== [ 30.610816] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.611766] Read of size 8 at addr ffff8880102b0058 by task sshd/220 [ 30.612538] [ 30.612756] CPU: 0 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.613628] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.614597] Call Trace: [ 30.614927] [ 30.615210] dump_stack_lvl+0x91/0xf0 [ 30.615698] print_report+0xcc/0x620 [ 30.616192] ? __virt_addr_valid+0x102/0x340 [ 30.616763] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.617397] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.618023] kasan_report+0xbe/0xf0 [ 30.618507] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.619178] vma_interval_tree_remove+0xc75/0xec0 [ 30.619801] vma_prepare+0xc54/0x11a0 [ 30.620285] __split_vma+0x5af/0x950 [ 30.620762] ? __pfx___split_vma+0x10/0x10 [ 30.621295] ? find_held_lock+0x2c/0x110 [ 30.621816] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.622379] ? lock_is_held_type+0x9f/0x120 [ 30.622926] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.623537] ? mtree_range_walk+0x632/0x900 [ 30.624089] ? mas_walk+0x5c7/0x7c0 [ 30.624571] do_vmi_munmap+0x1f1/0x2b0 [ 30.625070] mmap_region+0x1f9/0x2660 [ 30.625562] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.626067] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.626788] ? __pfx_lock_acquire+0x10/0x10 [ 30.627339] ? __pfx_mmap_region+0x10/0x10 [ 30.627880] ? security_mmap_addr+0x7d/0xa0 [ 30.628424] ? get_unmapped_area+0x1f5/0x3f0 [ 30.628988] do_mmap+0x854/0xf00 [ 30.629447] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.629944] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.630521] ksys_mmap_pgoff+0x3af/0x500 [ 30.631056] do_syscall_64+0x3f/0x90 [ 30.631548] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.632216] RIP: 0033:0x7f1a7aeffd82 [ 30.632691] Code: eb aa 66 0f 1f 44 00 00 41 f7 c1 ff 0f 00 00 75 27 55 48 89 fd 53 89 cb 48 85 ff 74 33 41 89 da 48 89 ef b8 09 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 56 5b 5d c3 0f 1f 00 c7 05 ae 03 01 00 16 00 [ 30.634862] RSP: 002b:00007ffdb5e7cb38 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.635813] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f1a7aeffd82 [ 30.636682] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f1a7a339000 [ 30.637703] RBP: 00007f1a7a339000 R08: 0000000000000009 R09: 0000000000001000 [ 30.638595] R10: 0000000000000812 R11: 0000000000000206 R12: 0000557f36fddf60 [ 30.639507] R13: 00007ffdb5e7cb50 R14: 00007ffdb5e7cb80 R15: 00007ffdb5e7cee0 [ 30.640429] [ 30.640729] [ 30.640956] Allocated by task 213: [ 30.641405] kasan_save_stack+0x22/0x50 [ 30.641927] kasan_set_track+0x25/0x30 [ 30.642444] __kasan_slab_alloc+0x59/0x70 [ 30.642977] kmem_cache_alloc+0x16b/0x370 [ 30.643503] vm_area_dup+0x20/0x160 [ 30.643978] __split_vma+0x170/0x950 [ 30.644465] split_vma+0xc6/0x110 [ 30.644920] mprotect_fixup+0x8d2/0xb30 [ 30.645455] do_mprotect_pkey+0x87e/0xd40 [ 30.645983] __x64_sys_mprotect+0x78/0xc0 [ 30.646521] do_syscall_64+0x3f/0x90 [ 30.647031] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.647719] [ 30.647947] Freed by task 213: [ 30.648367] kasan_save_stack+0x22/0x50 [ 30.648870] kasan_set_track+0x25/0x30 [ 30.649369] kasan_save_free_info+0x2b/0x50 [ 30.649927] __kasan_slab_free+0x10a/0x190 [ 30.650485] kmem_cache_free+0x10d/0x4d0 [ 30.651042] rcu_core+0x8c8/0x2860 [ 30.651516] __do_softirq+0x1b7/0x7d4 [ 30.652022] [ 30.652251] Last potentially related work creation: [ 30.652849] kasan_save_stack+0x22/0x50 [ 30.653362] __kasan_record_aux_stack+0x8e/0xa0 [ 30.653963] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.654653] remove_vma+0x139/0x170 [ 30.655140] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.655738] do_vmi_munmap+0x1f1/0x2b0 [ 30.656250] __vm_munmap+0x138/0x3a0 [ 30.656738] __x64_sys_munmap+0x59/0x80 [ 30.657236] do_syscall_64+0x3f/0x90 [ 30.657748] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.658430] [ 30.658662] The buggy address belongs to the object at ffff8880102b0000 [ 30.658662] which belongs to the cache vm_area_struct of size 168 [ 30.660243] The buggy address is located 88 bytes inside of [ 30.660243] freed 168-byte region [ffff8880102b0000, ffff8880102b00a8) [ 30.661725] [ 30.661942] The buggy address belongs to the physical page: [ 30.662627] page:000000004bfab329 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x102b0 [ 30.663816] memcg:ffff8880166be501 [ 30.664271] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.664935] page_type: 0xffffffff() [ 30.665395] raw: 0100000000000200 ffff8880087a0c80 dead000000000122 0000000000000000 [ 30.666381] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff8880166be501 [ 30.667370] page dumped because: kasan: bad access detected [ 30.668083] [ 30.668315] Memory state around the buggy address: [ 30.668917] ffff8880102aff00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 30.669816] ffff8880102aff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 30.670736] >ffff8880102b0000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.671677] ^ [ 30.672477] ffff8880102b0080: fb fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb [ 30.673338] ffff8880102b0100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.674268] ================================================================== [ 30.675566] Disabling lock debugging due to kernel taint [ 33.224378] BUG: Bad rss-counter state mm:00000000ea08207a type:MM_FILEPAGES val:33 [ 33.225964] BUG: Bad rss-counter state mm:00000000ea08207a type:MM_ANONPAGES val:22 [ 33.718346] BUG: Bad rss-counter state mm:000000008ca67ea2 type:MM_FILEPAGES val:33 [ 33.719537] BUG: Bad rss-counter state mm:000000008ca67ea2 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:20317' (ECDSA) to the list of known hosts. 2023/06/21 01:14:11 fuzzer started 2023/06/21 01:14:12 dialing manager at localhost:36067 2023/06/21 01:14:12 checking machine... 2023/06/21 01:14:12 checking revisions... [ 34.427788] kmemleak: Automatic memory scanning thread ended 2023/06/21 01:14:12 testing simple program... [ 34.470567] cgroup: Unknown subsys name 'net' [ 34.530521] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 01:14:11 Registers: info registers vcpu 0 RAX=0000000000000001 RBX=0000000000016c28 RCX=dffffc0000000000 RDX=ffffea00005b0a80 RSI=1ffffd40000b6148 RDI=0000000000000000 RBP=0000000000000000 RSP=ffff8880102a74f0 R8 =0000000000000000 R9 =fffff940000b614e R10=ffffea00005b0a77 R11=0000000000070006 R12=0000000000000003 R13=ffffea00005b0a08 R14=0000000000000000 R15=ffffea00005b0a00 RIP=ffffffff81788ea9 RFL=00000202 [-------] CPL=0 II=0 A20=1 SMM=0 HLT=0 ES =0000 0000000000000000 00000000 00000000 CS =0010 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA] SS =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA] DS =0000 0000000000000000 00000000 00000000 FS =0000 00007f3030450900 00000000 00000000 GS =0000 ffff88806ce00000 00000000 00000000 LDT=0000 fffffe0000000000 00000000 00000000 TR =0040 fffffe0000003000 00004087 00008b00 DPL=0 TSS64-busy GDT= fffffe0000001000 0000007f IDT= fffffe0000000000 00000fff CR0=80050033 CR2=00007f302f8918e0 CR3=000000000eb36000 CR4=00350ef0 DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000 DR6=00000000ffff0ff0 DR7=0000000000000400 EFER=0000000000000d01 FCW=037f FSW=0000 [ST=0] FTW=00 MXCSR=00001f80 FPR0=0000000000000000 0000 FPR1=0000000000000000 0000 FPR2=0000000000000000 0000 FPR3=0000000000000000 0000 FPR4=0000000000000000 0000 FPR5=0000000000000000 0000 FPR6=0000000000000000 0000 FPR7=0000000000000000 0000 XMM00=756f6a2f646d65747379732f6e75722f XMM01=00676f6c7379732f6c616e72756f6a2f XMM02=756f6a2f646d65747379732f6e75722f XMM03=006c616e72756f6a2f646d6574737973 XMM04=7d141b0365afdd0800000000000ae988 XMM05=b51e556472e820890000000000132af8 XMM06=4fda316b135da52b00000000001318e8 XMM07=fb795ef6d65770560000000000121c20 XMM08=4f5453444600273d67736d000d0a0920 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=dffffc0000000000 RBX=289dc873ac202f00 RCX=ffffffff812d86ea RDX=1ffff1100d9e72a2 RSI=ffff888015e01b40 RDI=ffff888008d91b40 RBP=ffff888008da7c38 RSP=ffff888016b27ae8 R8 =0000000000000000 R9 =fffffbfff0ba7a6a R10=ffffffff85d3d357 R11=0000000000000000 R12=0000000000000005 R13=ffff888008d91b40 R14=ffff888015e01fe8 R15=ffff888015e01b40 RIP=ffffffff810044e9 RFL=00000006 [-----P-] CPL=0 II=0 A20=1 SMM=0 HLT=0 ES =0000 0000000000000000 00000000 00000000 CS =0010 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA] SS =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA] DS =0000 0000000000000000 00000000 00000000 FS =0000 0000000000000000 00000000 00000000 GS =0000 ffff88806cf00000 00000000 00000000 LDT=0000 fffffe0000000000 00000000 00000000 TR =0040 fffffe000004a000 00004087 00008b00 DPL=0 TSS64-busy GDT= fffffe0000048000 0000007f IDT= fffffe0000000000 00000fff CR0=80050033 CR2=00007ffcc3f77000 CR3=000000000da72000 CR4=00350ee0 DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000 DR6=00000000ffff0ff0 DR7=0000000000000400 EFER=0000000000000d01 FCW=037f FSW=0000 [ST=0] FTW=00 MXCSR=00001f80 FPR0=0000000000000000 0000 FPR1=0000000000000000 0000 FPR2=0000000000000000 0000 FPR3=0000000000000000 0000 FPR4=0000000000000000 0000 FPR5=0000000000000000 0000 FPR6=0000000000000000 0000 FPR7=0000000000000000 0000 XMM00=ffffffffffffffffffff000000000000 XMM01=000000000000003635006b6f6c6c756e XMM02=62003d73646e756f7200323135616873 XMM03=5320444f4854454d5f54505952434e45 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000 XMM08=00000000000000000000000000202020 XMM09=ff0000ffffffffffff00000000ffffff XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000